Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
tang tai » hang tai, dung tai, sang tao
tai khoi » tai khoa, mai khoi, tao khoi
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
va cham » va chat, va tham
hanh va » hanh vi
xu tren » tu tren, cu tren, xa tren

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky tang tai khoi. lieu ((va cham) or (va cac)) duc va ((hanh va) OR (hang va)) xu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky tang tai khoi. lieu ((va cham) OR (va cac)) duc va ((hanh va) OR (hang va)) xu tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky tang tai khoi. lieu ((va cham) or (va cac)) duc va ((hanh va) OR (hang va)) xu tren*".